Hi all, I'm just new to BB platform.
I've got a Curve 9360 and it's battery is 1000 mAh.
I've seen some 2000mAh and 2500mAh high capacity batteries at ebay.

Is it ok to use those high cap batteries with this handset? Any experienced advice?

I would not trust any source other than a BB OEM supplier. If the battery is made by a reputable firm who provides batteries to RIM and it is for your specific model number, then it should be OK.